Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000071829-25-000012-index-headers.html | 2025-02-28 15:17:17 | |
| 0000071829-25-000012-index.html | 2025-02-28 15:17:17 | |
| 0000071829-25-000012.txt | 2025-02-28 15:17:17 | |
 0000071829-25-000012-xbrl.zip | 488144 | 2025-02-28 15:17:17 |
| a2024q410kexhibit191.htm | 70939 | 2025-02-28 15:17:17 |
| a2024q410kexhibit211.htm | 9102 | 2025-02-28 15:17:17 |
| a2024q410kexhibit231.htm | 2397 | 2025-02-28 15:17:17 |
| a2024q410kexhibit311.htm | 10040 | 2025-02-28 15:17:17 |
| a2024q410kexhibit312.htm | 10327 | 2025-02-28 15:17:17 |
| a2024q410kexhibit321.htm | 4696 | 2025-02-28 15:17:17 |
| a2024q410kexhibit322.htm | 4654 | 2025-02-28 15:17:17 |
| a2024q410kexhibit41.htm | 17261 | 2025-02-28 15:17:17 |
| a2024q410kexhibit42.htm | 915 | 2025-02-28 15:17:17 |
| FilingSummary.xml | 54620 | 2025-02-28 15:17:17 |
| Financial_Report.xlsx | 139816 | 2025-02-28 15:17:17 |
| MetaLinks.json | 1201198 | 2025-02-28 15:17:17 |
 npkinternational-certsxspe.jpg | 1514051 | 2025-02-28 15:17:17 |
| nr-20241231.htm | 1735340 | 2025-02-28 15:17:17 |
| nr-20241231.xsd | 70412 | 2025-02-28 15:17:17 |
| nr-20241231_cal.xml | 174109 | 2025-02-28 15:17:17 |
| nr-20241231_def.xml | 356385 | 2025-02-28 15:17:17 |
 nr-20241231_g1.jpg | 6518 | 2025-02-28 15:17:17 |
 nr-20241231_g2.jpg | 171717 | 2025-02-28 15:17:17 |
| nr-20241231_htm.xml | 1645199 | 2025-02-28 15:17:17 |
| nr-20241231_lab.xml | 944820 | 2025-02-28 15:17:17 |
| nr-20241231_pre.xml | 691841 | 2025-02-28 15:17:17 |
| R1.htm | 66534 | 2025-02-28 15:17:17 |
| R10.htm | 38888 | 2025-02-28 15:17:17 |
| R11.htm | 84461 | 2025-02-28 15:17:17 |
| R12.htm | 10728 | 2025-02-28 15:17:17 |
| R13.htm | 22902 | 2025-02-28 15:17:17 |
| R14.htm | 46323 | 2025-02-28 15:17:17 |
| R15.htm | 50274 | 2025-02-28 15:17:17 |
| R16.htm | 32669 | 2025-02-28 15:17:17 |
| R17.htm | 124481 | 2025-02-28 15:17:17 |
| R18.htm | 95576 | 2025-02-28 15:17:17 |
| R19.htm | 33162 | 2025-02-28 15:17:17 |
| R2.htm | 7796 | 2025-02-28 15:17:17 |
| R20.htm | 39068 | 2025-02-28 15:17:17 |
| R21.htm | 49804 | 2025-02-28 15:17:17 |
| R22.htm | 52615 | 2025-02-28 15:17:17 |
| R23.htm | 24612 | 2025-02-28 15:17:17 |
| R24.htm | 8834 | 2025-02-28 15:17:17 |
| R25.htm | 14644 | 2025-02-28 15:17:17 |
| R26.htm | 8481 | 2025-02-28 15:17:17 |
| R27.htm | 4387 | 2025-02-28 15:17:17 |
| R28.htm | 45898 | 2025-02-28 15:17:17 |
| R29.htm | 87848 | 2025-02-28 15:17:17 |
| R3.htm | 118693 | 2025-02-28 15:17:17 |
| R30.htm | 9684 | 2025-02-28 15:17:17 |
| R31.htm | 80472 | 2025-02-28 15:17:17 |
| R32.htm | 11274 | 2025-02-28 15:17:17 |
| R33.htm | 21877 | 2025-02-28 15:17:17 |
| R34.htm | 52286 | 2025-02-28 15:17:17 |
| R35.htm | 34438 | 2025-02-28 15:17:17 |
| R36.htm | 26718 | 2025-02-28 15:17:17 |
| R37.htm | 83816 | 2025-02-28 15:17:17 |
| R38.htm | 97580 | 2025-02-28 15:17:17 |
| R39.htm | 26855 | 2025-02-28 15:17:17 |
| R4.htm | 13035 | 2025-02-28 15:17:17 |
| R40.htm | 40978 | 2025-02-28 15:17:17 |
| R41.htm | 39475 | 2025-02-28 15:17:17 |
| R42.htm | 47683 | 2025-02-28 15:17:17 |
| R43.htm | 25229 | 2025-02-28 15:17:17 |
| R44.htm | 22393 | 2025-02-28 15:17:17 |
| R45.htm | 25846 | 2025-02-28 15:17:17 |
| R46.htm | 33145 | 2025-02-28 15:17:17 |
| R47.htm | 26833 | 2025-02-28 15:17:17 |
| R48.htm | 13162 | 2025-02-28 15:17:17 |
| R49.htm | 49096 | 2025-02-28 15:17:17 |
| R5.htm | 111896 | 2025-02-28 15:17:17 |
| R50.htm | 57812 | 2025-02-28 15:17:17 |
| R51.htm | 12527 | 2025-02-28 15:17:17 |
| R52.htm | 9352 | 2025-02-28 15:17:17 |
| R53.htm | 28586 | 2025-02-28 15:17:17 |
| R54.htm | 4851 | 2025-02-28 15:17:17 |
| R55.htm | 9258 | 2025-02-28 15:17:17 |
| R56.htm | 18008 | 2025-02-28 15:17:17 |
| R57.htm | 14863 | 2025-02-28 15:17:17 |
| R58.htm | 29071 | 2025-02-28 15:17:17 |
| R59.htm | 44815 | 2025-02-28 15:17:17 |
| R6.htm | 25016 | 2025-02-28 15:17:17 |
| R60.htm | 91980 | 2025-02-28 15:17:17 |
| R61.htm | 19705 | 2025-02-28 15:17:17 |
| R62.htm | 15742 | 2025-02-28 15:17:17 |
| R63.htm | 9306 | 2025-02-28 15:17:17 |
| R64.htm | 25091 | 2025-02-28 15:17:17 |
| R65.htm | 15197 | 2025-02-28 15:17:17 |
| R66.htm | 19313 | 2025-02-28 15:17:17 |
| R67.htm | 55384 | 2025-02-28 15:17:17 |
| R68.htm | 12050 | 2025-02-28 15:17:17 |
| R69.htm | 29069 | 2025-02-28 15:17:17 |
| R7.htm | 5582 | 2025-02-28 15:17:17 |
| R70.htm | 12624 | 2025-02-28 15:17:17 |
| R71.htm | 22833 | 2025-02-28 15:17:17 |
| R72.htm | 28758 | 2025-02-28 15:17:17 |
| R73.htm | 42420 | 2025-02-28 15:17:17 |
| R74.htm | 14885 | 2025-02-28 15:17:17 |
| R75.htm | 14363 | 2025-02-28 15:17:17 |
| R76.htm | 27714 | 2025-02-28 15:17:17 |
| R77.htm | 13168 | 2025-02-28 15:17:17 |
| R78.htm | 69863 | 2025-02-28 15:17:17 |
| R79.htm | 4927 | 2025-02-28 15:17:17 |
| R8.htm | 45618 | 2025-02-28 15:17:17 |
| R80.htm | 115886 | 2025-02-28 15:17:17 |
| R81.htm | 31105 | 2025-02-28 15:17:17 |
| R82.htm | 51574 | 2025-02-28 15:17:17 |
| R83.htm | 23811 | 2025-02-28 15:17:17 |
| R84.htm | 18126 | 2025-02-28 15:17:17 |
| R85.htm | 15513 | 2025-02-28 15:17:17 |
| R86.htm | 13027 | 2025-02-28 15:17:17 |
| R87.htm | 7956 | 2025-02-28 15:17:17 |
| R88.htm | 16373 | 2025-02-28 15:17:17 |
| R89.htm | 7274 | 2025-02-28 15:17:17 |
| R9.htm | 94027 | 2025-02-28 15:17:17 |
| R90.htm | 28142 | 2025-02-28 15:17:17 |
| report.css | 2768 | 2025-02-28 15:17:17 |
| Show.js | 1086 | 2025-02-28 15:17:17 |